Specifications ntawm 3LPE Coated yeeb nkab

3LPE (Peb-txheej Polyethylene Coated Yeeb Nkab) coated yeeb nkab yog tiv thaiv los ntawm fusion-bonded epoxy primer, copolymer nplaum, thiab ib qho extruded polyethylene txheej txheej. Cov txheej txheem txheej yog siv rau seamless lossis welded steel kab yeeb nkab. FBE primer yog siv ncaj qha mus rau blasted thiab rhuab steel nto, tsim thawj corrosion tiv thaiv interface; Cov nplaum muab cov tshuaj thiab cov khoom sib txuas ntawm epoxy thiab polyethylene; thiab PE txheej muab lub thickness, toughness thiab ya raws tsim nyog los tiv thaiv cov yeeb nkab thaum nqa, thauj, cia, ditching thiab backfilling. Lub kaw lus feem ntau tau teev tseg rau faus lossis submerged roj, roj thiab cov kav dej thauj mus los, cov kab sib sau, kev hla dej thiab txoj hauv kev los ntawm cov av ntub lossis corrosive uas muaj corrosion kuj yuav tsum tau ua ke nrog kev tiv thaiv kev cuam tshuam, indentation thiab puas. Rau HDD luag, pob zeb sau, ua haujlwm siab kub, lossis pob zeb ballast txheej, txheej chav kawm, kev tiv thaiv kev puas tsuaj, txiav rov qab geometry, thiab kev sib koom ua ke yuav tsum muaj kev tsim nyog tshwj xeeb.

3LPE txheej txheej txheej yuav tsum raug suav hais tias yog ib qho kev sib xyaw ua ke, cov qauv kev tiv thaiv kev tiv thaiv corrosion tsim, tsim nyog thiab tswj tau rau cov kev pabcuam tshwj xeeb, thiab tsis yog kev sib xyaw yooj yim ntawm peb txheej txheej. Cov txheej yuav tsum muaj kev tiv thaiv zoo rau hauv av-sab kis kab mob thiab xav tau thermal mus; Txawm li cas los xij, cov khoom no yuav tsum tsis txhob siv los them nyiaj rau FBE tsis tiav, kev kho FBE tsis txaus, lossis cov nplaum nplaum tsis txaus.

GNEE muab 3LPE coated kav nrog seamless puag yeeb nkab, HFW / ERW, LSAW thiab SSAW rau faus los yog submerged roj, roj thiab thauj pipelines. Lub hauv paus yeeb nkab thiab txheej txheej yuav tsum tau koom tes nrog API Spec 5L, ISO 3183, ISO 21809-1, DIN 30670-1, CSA Z245.21 thiab pom zoo qhov project specifications. Cov lus hauv qab no cais cov haujlwm thiab qhov kev lees paub tseem ceeb ntawm txhua txheej hauv 3PE txheej txheej txheej.

Npog txheej	Khoom siv	Engineering muaj nuj nqi	Kev Txaus Siab Tseem Ceeb
Thawj txheej	Fusion Bonded Epoxy (FBE)	Adheres rau npaj steel thiab muab cov thawj corrosion tiv thaiv interface	Deg huv si, profile, daim ntawv thov kub, curing thiab zaj duab xis txuas ntxiv
Ob txheej	Copolymer los yog graft nplaum	Chemically thiab mechanically txuas cov epoxy nrog polyethylene txheej	Material compatibility, extrusion kub thiab daim ntawv thov qhov rais
Peb txheej	extruded polyethylene	Muab cov dej noo tiv thaiv thiab tiv thaiv cov khaubncaws sab nraud povtseg tiv thaiv kev cuam tshuam, indentation thiab puas	Tag nrho cov thickness, txuas ntxiv, cuam tshuam tsis kam thiab tuav kev puas tsuaj

Specifications ntawm 3LPE Coated yeeb nkab

Cov khoom siv ntawm 4†"60 ntiv tes thiab cov txheej txheem siv li ntawm 1.8€"3.7 hli. Qhov kawg muaj nyob ntawm lub hauv paus yeeb nkab qhov ntev, txheej txheej muaj peev xwm, txheej txheej txheej thiab qhov project tsim nyog.

Download: 3LPE_Coated_Pipe_Specification_and_Ordering_Guide.pdf

3LPE Pipeline Standards thiab ua raws

Lub hauv paus yeeb nkab thiab txheej txheej yog tswj hwm los ntawm cov ntaub ntawv sib txawv. Lub hauv paus yeeb nkab daim ntawv pov thawj lees paub cov khoom steel. Nws ib leeg tsis paub meej tias cov txheej txheej sab nrauv ua tau raws li qhov project txheej specification.

Txoj cai	Scope hauv 3LPE yeeb nkab xaj
ISO 21809-1: 2018	Cog-applied peb-txheej PE thiab PP sab nrauv txheej rau faus lossis submerged steel kav
DIN 30670-1: 2024	Factory-applied extruded polyethylene coatings ntawm steel kav thiab fittings
CSA Z245.21:22	Kev tsim nyog, daim ntawv thov, tshuaj xyuas, kuaj, tuav thiab khaws cia ntawm cov nroj tsuag siv polyethylene txheej rau steel kav
API Spec 5L	Kev tsim khoom thiab txais yuav tsum tau rau Seamless thiab Welded Steel Kab Yeeb
TS EN ISO 3183: 2019	PSL 1 thiab PSL 2 seamless thiab welded steel yeeb nkab rau pipeline tsheb thauj mus los
TS EN ISO 8501-1	Kev ntsuam xyuas pom ntawm steel nto huv si ua ntej txheej
ISO 8502 Series	Kev soj ntsuam ntawm cov plua plav, soluble ntsev thiab lwm yam kab mob ntog
ISO 8503 Series	Kev ntsuas thiab ntsuas ntawm blasted nto profile
Project Txheej Specification	Chav kawm kub, chav kawm tuab, txiav rov qab, xeem zaus, kev lees paub thiab cov ntaub ntawv

ISO 3183: 2019 tseem siv tau tom qab nws 2026 kho dua tshiab thiab npog seamless thiab welded steel yeeb nkab yeeb nkab PSL 1 thiab PSL 2. DIN npe DIN 30670-1: 2024 raws li lub Hoobkas tam sim no siv extruded PE txheej txheej txheem, thaum CSA Z245.21: 22 kev soj ntsuam, kev tsim nyog, thiab daim ntawv thov. txheej.

Yog li, daim ntawv xaj yuav tsum txheeb xyuas ob daim ntawv, piv txwv li:

API Spec 5L PSL 2 kab yeeb nkab nrog 3LPE txheej txheej ua raws li ISO 21809-1, suav nrog cov chav kawm txheej txheej, tsim kub, qhov tsawg kawg nkaus thickness, txiav thiab project ITP.

Sau tsuas yog "API 5L 3LPE yeeb nkab" tawm hauv chav kawm txheej thiab kev lees paub tsis tiav.

Tus neeg sawv cev thickness ntawm 3LPE txheej

Tag nrho cov tuab ntawm 3LPE yeeb nkab yog txiav txim siab los ntawm cov yeeb nkab txoj kab uas hla, txheej txheej, kev pabcuam kub, tuav kev pheej hmoo thiab qhov project specification. Nws yuav tsum tsis txhob muab kho raws li ib tug universal nqi.

Ib qho kev sawv cev yuav muaj xws li:

• FBE primer: ib txwm teev raws li qhov tsawg kawg nkaus qhuav zaj duab xis thickness;
• nplaum txheej: feem ntau nyob ib ncig ntawm 0.17-0.25 hli hauv qhov project specifications;
• PE txheej: kho kom ua tiav tag nrho cov thickness;
• tag nrho cov txheej tiav: feem ntau nyob rau hauv kwv yees li 1.8-3.7 hli rau cov khoom lag luam txheem.

Cov nuj nqis no yog cov txiaj ntsig siv, tsis yog kev lees txais tsis siv neeg. Tshaj tawm tus neeg teb xov tooj specifications qhia tias qhov tsawg kawg nkaus thickness tuaj yeem sib txawv nyob ntawm OD ntawm cov yeeb nkab. Ib qho kev qhia tshwj xeeb rau pej xeem, piv txwv li, txhais cov thickness yam tsawg kawg nkaus ntawm 2.5, 2.8, 3.0 thiab 3.3 mm rau cov pab pawg ntawm cov yeeb nkab txoj kab uas hla.

RFQ yuav tsum qhia:

• yam tsawg kawg nkaus FBE thickness;
• yam tsawg kawg nkaus nplaum thickness;
• yam tsawg kawg nkaus txheej thickness;
• cov chav kawm ib txwm lossis cov txheej txheem txheej txheej;
• hauv zos thickness hauv qab qhov tsawg kawg nkaus tso cai;
• thickness ntsuas zaus;
• yog xav tau kev tiv thaiv kev tiv thaiv ntxiv.

3LPE vs FBE vs 3LPP txheej

FBE, 3LPE thiab 3LPP yog cov nroj tsuag siv cov yeeb nkab txheej txheej uas muaj feem xyuam rau ib leeg. FBE tsim cov txheej txheem tiv thaiv corrosion ncaj qha rau ntawm cov hlau npaj thiab tuaj yeem siv ib leeg lossis ua cov txheej txheem primer hauv 3LPE thiab 3LPP systems. 3LPE ntxiv cov nplaum nplaum thiab txheej txheej polyethylene los txhim kho qhov cuam tshuam, puas thiab ya raws, thaum 3LPP siv polypropylene los muab kev ua haujlwm zoo dua ntawm qhov kub siab.

Qhov kev xaiv ntawm cov tshuab no nyob ntawm kev ua haujlwm kub, txoj kev teeb tsa, av thiab sau cov xwm txheej, kev pheej hmoo cuam tshuam, kev sib raug zoo ntawm daim ntawv cog lus, thiab tsim nyog txwv ntawm cov txheej txheem ua tiav. Cov lus hauv qab no sib piv nws cov qauv, kev coj tus cwj pwm hauv kev pabcuam, kev soj ntsuam xyuas thiab cov kev txwv tseem ceeb ntawm kev xaiv.

Qhov ntsuas kub tau qhia yog tus sawv cev qhov tseem ceeb ntawm cov txheej txheem tsim nyog. Kev xaiv zaum kawg yuav tsum ua raws li cov ntawv pom zoo txheej txheem, kev ua haujlwm kub, kev teeb tsa, kev rov qab ua haujlwm thiab qhov project specification.

Download: 3LPE_vs_FBE_vs_3LPP_Coating_Selection_Guide_Final.pdf

3LPE piv rau 2LPE

Ib lub tsho ob lub tsho PE feem ntau tshem tawm ib leeg FBE primer lossis siv cov txheej txheem yooj yim / nplaum. Kev ua tiav 3LPE muaj qhov sib txawv ntawm epoxy- steel corrosion barrier, ib txheej kev sib txuas thiab ib txheej txheej txheej txheej txheej txheej.

Ob lub tshuab yuav tsum tsis txhob raug kho raws li kev sib hloov. Qhov project yuav tsum paub meej tias:

• seb FBE primer yog qhov yuav tsum tau ua;
• qhov xav tau cathodic tso tawm kev ua tau zoo;
• chav kawm kub;
• chav kawm tuab;
• xeem txoj kev;
• Compatibility nrog lub teb sib koom txheej.

Qhov hnyav ntawm 3LPE coated yeeb nkab

Qhov hnyav ntawm cov yeeb nkab ua tiav yog qhov sib npaug ntawm qhov loj ntawm cov yeeb nkab steel liab qab thiab qhov loj ntawm tag nrho cov txheej txheej.

Rau txhua txheej txheej:

Qhov twg:

• m_Yog= txheej txheej ib 'meter';
• d_{kuv hnov}= sab nraud tom qab siv cov txheej txheem;
• d_{i, i}= txoj kab uas hla ua ntej siv txheej ntawd;
• YOG_Yog= qhov ceev ntawm cov khoom siv txheej.

Tag nrho qhov loj ntawm cov yeeb nkab coated yog:

m_{tag nrho}= m_hlau+ m_FBE+ m_nplaum+ m_PE

Rau kev npaj zaub mov xa tuaj, kev suav yuav tsum xav txog:

• qhov ntev uncoated (cutback) ntawm ob qhov kawg;
• qhov tseeb nruab nrab thickness ntawm txheej;
• ib ntus couplings, kawg tiv thaiv los yog plugs;
• kho cov khoom;
• qhov hnyav ntawm pob, txaj thiab ntim khoom.

Kev suav yooj yim siv tsuas yog PE qhov ntom ntom thiab tag nrho cov txheej txheej tuab yuav overestimate lossis underestimate tus nqi tseeb, vim FBE, nplaum thiab polyethylene muaj qhov sib txawv. Qhov kawg thauj khoom hnyav yuav tsum yog raws li kev pom zoo theoretical xam los yog nyob rau hauv cov ntaub ntawv ntawm cov khoom hnyav.

3LPE txheej txheej txheem tsim khoom

1. Kev txais lub hauv paus kav dej thiab kev txheeb xyuas tus kheej

Txhua cov yeeb nkab tau txais tawm tsam nws cov ntaub ntawv tsim khoom. Tube tooj, ncuav tus naj npawb, tus qauv, qib, OD, phab ntsa thickness, qhov ntev thiab qhov kawg kev npaj raug txheeb xyuas ua ntej txheej.

Cov teeb meem saum npoo uas tuaj yeem cuam tshuam nrog daim ntawv thov txheej - xws li flakes, weld spatter, sib sib zog nqus khawb, laminations lossis ntse projections - raug txheeb xyuas thiab muab pov tseg. Kev sib tsoo yuav tsum tsis txhob txo qhov seem phab ntsa tuab hauv qab qhov kev lees paub ntawm cov yeeb nkab hauv paus.

2. Tshem tawm cov roj, roj thiab cov khoom paug

Roj, roj, ntsev, cov nplaum nplaum thiab lwm yam kab mob raug tshem tawm ua ntej abrasive blasting. Kev tawg ntawm qhov chaw tsis huv tuaj yeem embed cov khib nyiab hauv qhov profile thiab txo cov adhesion mus ntev ntawm epoxy.

Cov ntaub ntawv ntxuav yuav tsum txheeb xyuas cov txheej txheem, cov khoom siv, thiab cov txiaj ntsig ntawm kev tshuaj xyuas.

3. Ntxuav los ntawm abrasive blasting

Sab nrauv ntawm cov yeeb nkab yog moistened kom huv si raws li qhov yuav tsum tau ua los ntawm kev pom zoo txheej txheem, feem ntau nyob ze ntawm cov hlau dawb sib npaug rau Sa 2½ ib ISO 8501-1.

Qhov chaw npaj tau raug kuaj xyuas kom paub tseeb:

• pom kev huv;
• qhov profile;
• hmoov av paug;
• soluble ntsev thaum xav tau;
• steel tsis xws luag reexposed;
• humidity los yog flash oxidation.

TS EN ISO 8501-1 Kev ntsuas qhov pom ntawm qhov kev npaj, thaum cov txheej txheem ntawm ISO 8503 yog siv los ntsuas qhov profile ntawm qhov blasted nto.

4. Cov yeeb nkab cua sov

Cov yeeb nkab yog rhuab mus rau qhov tsim nyog FBE daim ntawv thov kub. Qhov kub thiab txias yog ntsuas nrog cov cuab yeej ntsuas ntsuas thiab kaw nrog cov kab nrawm, txoj kab uas hla thiab phab ntsa thickness ntawm cov yeeb nkab.

Lub qhov rais kub pom zoo yuav tsum ua raws li cov khoom siv txheej txheej cov ntaub ntawv thiab daim ntawv thov txheej txheem Specification. Kev siv FBE hauv qab lub qhov rais tsim nyog yuav txo tau kev kho thiab adhesion. Qhov kub ntau dhau tuaj yeem ua rau cov hmoov puas los yog hloov kev sib cuam tshuam ntawm epoxy thiab cov nplaum.

5. Daim ntawv thov ntawm FBE primer

Electrostatically them epoxy hmoov yog txau rau ntawm cov hlau rhuab. Cov hmoov melts, ntws thiab pib kho, tsim lub ntsiab tiv thaiv corrosion txheej.

Kev tswj hwm ntawm FBE daim ntawv thov suav nrog:

• hmoov batch;
• qhov kev faib ua feem ntawm cov hmoov dawb huv / rov qab ua dua tshiab uas tso cai rov ua dua tshiab;
• qhov xwm txheej ntawm cov phom phom;
• qhov kub ntawm cov yeeb nkab;
• kab ceev;
• gelation thiab kho tus cwj pwm;
• yam tsawg kawg nkaus qhuav zaj duab xis thickness.

6. Adhesive daim ntawv thov

Cov nplaum copolymer yog siv thaum FBE tseem nyob hauv lub qhov rais tsim nyog. Nws lub sijhawm thov yog qhov tseem ceeb: txheej txheej yuav tsum sib cuam tshuam nrog cov epoxy thiab, tib lub sijhawm, txais cov txheej txheem polyethylene.

Lub extrusion kub, ntws tus nqi thiab lub sij hawm ntawm daim ntawv thov ntawm FBE thiab cov nplaum raug kaw.

7. Polyethylene extrusion

Cov txheej txheej PE txheej yog siv los ntawm extrusion thiab nias rau ntawm cov nplaum kom tsis txhob muaj cua nkag, tsis muaj zog sib tshooj thiab qhov khoob ze ntawm qhov ntev lossis kauv weld seams.

Lub thickness ntawm txheej txheej yog tswj kom ua tiav cov txheej txheem txheej txheem tag nrho.

8. Cua txias thiab tempering

Cov yeeb nkab coated yog txias raws li tus txheej txheem tsim nyog kom txog rau thaum nws tuaj yeem ua haujlwm thiab tshuaj xyuas yam tsis muaj deformation lossis kev puas tsuaj rau txheej.

Txias tej yam kev mob yuav tsum tsis txhob qhia tej kab nrib pleb, warping, delamination los yog uncontrolled residual stresses.

9. Cutback ntawm cov yeeb nkab kawg

Cov txheej txheem raug tshem tawm los yog txiav tawm ntawm txhua qhov kawg ntawm cov yeeb nkab kom tso cai rau kev sib tsoo thiab teb txheej ntawm qhov sib koom ua ke.

Qhov kev txiav txim yuav tsum txhais:

• qhov ntev ntawm qhov txiav;
• qhov kam rau ua;
• lub kaum sab xis ntawm ntug ntawm txheej;
• qhov xwm txheej ntawm cov hlau raug;
• kev ua tiav ntawm cov nplaum;
• kev tiv thaiv ib ntus ntawm qhov kawg liab qab;
• Compatibility nrog tsis siv neeg los yog phau ntawv vuam.

Daim ntawv tshaj tawm tus neeg teb xov tooj specification siv 120 mm nrog kam rau ua +20/âˆ'0 mm raws li tus qauv txiav thiab 150 mm nrog tib lub siab ntev qhov uas tsis siv neeg vuam xav tau qhov chaw ntxiv. Cov txiaj ntsig no yog cov piv txwv tshwj xeeb thiab tsis yog qhov dav dav.

10. Kev tshuaj xyuas zaum kawg, kho thiab cim

Txhua cov yeeb nkab yog raug rau kev soj ntsuam pom, kev txheeb xyuas cov txheej tuab thiab tshawb pom qhov tsis sib xws. Tso cai txheej puas raug kho nrog lub kaw lus pom zoo thiab rov tshuaj xyuas nrog tib txoj kev lees txais.

Thawj tus kheej ntawm cov yeeb nkab yog tom qab ntawd rov qab mus rau qhov tiav 3PE anti-corrosion steel yeeb nkab.

Cov neeg ua haujlwm pej xeem tshwj xeeb xav tau cov ntaub ntawv tswj hwm ntawm qhov chaw npaj, cov yeeb nkab cua sov, FBE daim ntawv thov, nplaum thiab PE extrusion, quenching, cutback npaj, ntsuas ntsuas, kho, thiab tuav cov yeeb nkab coated.

Kev tshuaj xyuas thiab kev lees paub ntawm 3LPE coated yeeb nkab

Ib qho kev txhim khu kev qha 3PE txheej txheej tau lees paub los ntawm cov txheej txheem cov ntaub ntawv thiab cov khoom tiav kev sim, tsis yog qhov pom kev pom xwb.

soj ntsuam point	Yuav ua li cas txheeb xyuas	Dab tsi lees paub	Tswj kev pheej hmoo
Pipe ID	Kos npe thiab tshuaj xyuas cov ntaub ntawv	Lub hauv paus yeeb nkab nkag mus rau txheej txheej txheej	Qib lossis nruam tus lej tsis meej pem
Kev tu qhov chaw	Visual comparator thiab pom zoo cov txheej txheem	Mill nplai, xeb thiab paug tau raug tshem tawm	Tsawg FBE adhesion
Nto profile	Profile gauge, comparator los yog replica daim kab xev	Muaj txaus mechanical anchorage rau epoxy	Kev tshem tawm ntxov ntxov
Hmoov thiab soluble ntsev	Daim kab xev los yog conductivity txoj kev uas tau teev tseg	Qhov saum npoo tsis muaj kab mob tom qab blasting	Osmotic hlwv thiab tsis muaj zog khi
Kev thov kub	Calibrated pyrometer thiab cov ntaub ntawv txuas ntxiv	FBE yog siv nyob rau hauv lub qhov rais kub tsim nyog	Kev kho tsis txaus lossis thermal degradation
FBE thiab nplaum thickness	Calibrated thickness ntsuas	Yam tsawg kawg nkaus yuav tsum tau ntawm txhua tus neeg txheej yog ua tau	Corrosion barrier los yog tsis muaj zog daim ntawv cog lus
Tag nrho thickness	Kev ntsuas raws lub cev thiab thaj chaw weld	Cov chav kawm txheej txheej yuav tsum tau ua tiav	Impact thiab indentation puas
Kev tshuaj xyuas qhov muag	100% ntawm qhov chaw sab nrauv	Tsis muaj wrinkles, khoob, npuas, kua muag los yog delamination	Nkaum daim ntawv thov tsis raug
Kev kuaj xyuas qhov tsis sib xws	Tag nrho ncig ntsuas hluav taws xob ntawm qhov kev pom zoo nruj	Kev txuas ntxiv ntawm txheej thiab tsis muaj qhov pores	Kev sib cuag ncaj qha ntawm cov electrolyte nrog cov hlau
Peel los yog daim ntawv cog lus lub zog kuaj	strip peel test ntawm qhov ntsuas kub	Union ntawm PE, nplaum, FBE thiab hlau	Txheej txheej sib cais
Impact thiab indentation	Kev tsim nyog lossis kev sim ntau lawm	Tsis kam rau tuav, txhaws thiab concentrated loads	Kev puas tsuaj ntawm qhov chaw
Cathodic detachment	Laboratory kuaj nyob rau hauv qhov ntsuas kub thiab voltage	Cwj pwm ntawm txheej ntawm ib sab ntawm qhov tsis xws luag hauv kev tiv thaiv cathodic	Tso rau hauv zaj duab xis
Txiav rov qab soj ntsuam	Daim kab xev, profile gauge thiab kev kuaj pom	Kho qhov vuam thiab thaj chaw sib koom ua ke	Kev hloov kho teb thiab txheej txheej rework
Reinspection ntawm kev kho	Thickness thiab discontinuity retest	Qhov chaw kho kom haum raws li qhov yuav tsum tau tso tawm	Cov ntaub ntawv tsis raug hauv zos

Kev soj ntsuam zaus yuav tsum ua raws li tus qauv xaiv thiab ITP pom zoo. Qee qhov kev qhia tshwj xeeb xav tau kev kuaj pom thiab kev kuaj tsis tu ncua ntawm 100% ntawm txhua lub yeeb nkab nto, thaum qhov kev ntsuam xyuas kev puas tsuaj xws li tev, cuam tshuam, indentation, thiab cathodic disbondment yog ua raws li kev tsim nyog, hloov, batch, lossis txhua hnub zaus.

Qhov kev ntsuam xyuas tsis tu ncua yuav tsum tsis txhob muab luam tawm los ntawm lwm qhov project. Nws raug xaiv raws li tus qauv siv, lub thickness ntawm txheej thiab cov txheej txheem pom zoo.

Download: 3LPE_Coated_Pipe_Inspection_and_Acceptance_Checklist_Revised.pdf

Cov ntawv thov raws li kev teeb tsa

Cov kab tsheb thauj mus los faus rau hauv cov av ntub lossis corrosive

Thaum lub sij hawm trenching thiab backfilling, cov yeeb nkab yog raug rau cov av noo, pob zeb, tiv tauj siab thiab tuav loads. Lub txheej PE txheej txwv kev puas tsuaj thiab kev puas tsuaj, thaum FBE txheej tswj kev tiv thaiv corrosion ntawm cov hlau nto.

Kev lees txais yuav tsum tsom mus rau kev tshawb nrhiav qhov tsis sib xws, tag nrho cov thickness, tev lub zog, thiab kho cov ntaub ntawv ua ntej cov yeeb nkab nkag mus rau hauv trench.

Pob zeb sau thiab roob txoj kev

Pob zeb layouts tsim cov ntsiab lus sib txuas thaum lub sij hawm downhill thiab infilling. Standard 3LPE tej zaum yuav xav tau cov chav kawm tuab tuab, xaiv cov khoom siv tiv thaiv los yog kev puas tsuaj los tiv thaiv ntxiv.

Qhov kev txiav txim siab txheej yuav tsum tau txuas nrog cov lus qhia tshwj xeeb, es tsis yog xav tias ib qho 3LPE yeeb nkab tuaj yeem tiv taus cov pob zeb tsis txwv.

Kab rov tav Directional Drilling thiab Drag (HDD)

HDD luag cov txheej txheem rau kev puas tsuaj tas mus li, shearing thiab localized gouging. Ib qhov project yuav xav tau cov PE tuab dua, kev tiv thaiv kev puas tsuaj, lossis lwm txheej txheej tiv thaiv tsim nyog.

Kev tshuaj xyuas yuav tsum muaj xws li rub ntev, qhov geometry, av thiab pob zeb, lub zog tensile, txheej thickness, thiab kho cov phiaj xwm.

Kev teeb tsa hauv cov dej ntws, ntug dej hiav txwv thiab submerged

Rau cov kav dej hauv dej, 3LPE muab cov txheej txheem tiv thaiv corrosion nyob rau hauv cov pob zeb ballast txheej lossis txheej txheej tiv thaiv txheej txheem.

Lub interface ntawm 3LPE thiab cov pob zeb ballast txheej yuav tsum tsim nyog. Xaus geometry, anode fixation, teb hlws ris txheej, thiab pob zeb tsis pub txiav qhov ntev kuj yuav tsum muaj kev sib koom tes.

Cov pa roj thiab roj kav ntev

Kev thauj mus los ntev, rov nqa dua, kev cia hauv vaj, thiab kev sib txuas txuas txuas ntxiv ua rau muaj feem cuam tshuam rau txheej txheej ua ntej ua haujlwm.

Kev tshuaj xyuas yuav tsum txuas ntxiv mus txog thaum thauj khoom thiab tso tawm ntawm cov khoom xa tuaj. Kev suav cov yeeb nkab zaum kawg thiab cov ntaub ntawv kho yuav tsum ua raws li cov ntawv ntim khoom thiab cov ntaub ntawv tshuaj xyuas txheej txheej.

3LPE Txheej Kev Ncaj Ncees Kev Ruaj Ntseg thiab Cov Chaw Tshawb Xyuas

Kev ncaj ncees ntawm 3LPE txheej txheej yog nyob ntawm ntau tshaj qhov pom ntawm cov txheej txheem polyethylene. Kev npaj nto, daim ntawv thov kub, nplaum compatibility, txheej thickness thiab ntau lawm traceability tag nrho cov cuam tshuam seb lub txheej yuav nyob twj ywm adhered thaum tuav, installation thiab ntev kev pab cuam.

1. FBE adhesion thiab steel nto npaj

Qhov tseem ceeb txaus ntshai: detachment ntawm FBE nyob rau hauv ib qho kev pom tsis zoo polyethylene txheej.

Roj, ntsev, plua plav, tsis txaus blast profile los yog cov yeeb nkab cua kub tsis raug tuaj yeem ua rau tsis muaj zog ntawm FBE primer thiab steel nto. Cov dej noo tuaj yeem txav mus rau hauv qab txheej yam tsis muaj qhov pom tseeb sab nrauv.

Cov chaw kuaj xyuas:

• tu thiab deg profile cov ntaub ntawv;
• hmoov av thiab soluble ntsev xeem qhov twg teev;
• calibrated yeeb nkab kub xyuas;
• FBE daim ntawv thov thiab kho cov ntaub ntawv;
• peel resistance thiab cathodic detachment tests.

2. Union ntawm FBE, nplaum thiab polyethylene

Kev pheej hmoo tseem ceeb: PE txheej sib cais thaum tuav, txiav, lossis kev sib koom ua ke.

Qhov no feem ntau yog vim cov ntaub ntawv txheej tsis sib xws, qhov kub tsis raug extrusion, lossis daim ntawv thov sab nraum lub qhov rais tsim nyog.

Cov chaw kuaj xyuas:

• pom zoo ua ke ntawm FBE-adhesive-PE cov ntaub ntawv;
• kev txheeb xyuas ntawm cov khoom batch;
• extrusion kub thiab kab ceev cov ntaub ntawv;
• Cov ntaub ntawv pov thawj Kev Xeem Txuj Ci Txheej Txheem (PQT);
• tev ntau lawm los yog daim ntawv cog lus kuaj lub zog.

3. Txheej thickness thiab seam npog

Kev pheej hmoo tseem ceeb: thaj chaw tsis muaj zog hauv cheeb tsam nrog qis tsis kam cuam tshuam, indentation lossis puas.

Tsis ruaj tsis khov extrusion, tsis sib npaug kab ceev, los yog tsis txaus siab nyob ib ncig ntawm longitudinal thiab kauv seams tuaj yeem tsim cov cheeb tsam uas tsis tshua muaj tuab lossis cov cua nkag.

Cov chaw kuaj xyuas:

• txheej thickness ntsuas raws lub cev;
• kev kuaj ntxiv ntawm LSAW, SSAW lossis HFW vuam zones;
• weld apex tshuaj xyuas;
• tswj huab cua ntxiab thiab sib tshooj;
• yeeb nkab-los ntawm cov yeeb nkab tuab cov ntaub ntawv thaum ITP xav tau.

4. Kev txiav tawm ntawm qhov kawg thiab kev npaj ntawm qhov sib koom ua ke

Kev pheej hmoo tseem ceeb: Vuam qeeb, tsis zoo los yog rov ua haujlwm ntawm kev sib koom ua ke.

Qhov ntev ntawm qhov txiav rov qab tsis raug, cov npoo npoo puas lawm, los yog npaj tsis raug rau cov hlau tuaj yeem cuam tshuam nrog lub girth weld thiab cov txheej tom ntej ntawm kev sib koom ua ke.

Cov chaw kuaj xyuas:

• cutback ntev ntsuas thiab kam rau ua;
• txheej ntug profile tshuaj xyuas;
• nto mob ntawm cov hlau raug;
• kawg kev tiv thaiv thaum lub sij hawm cia thiab kev thauj mus los;
• Tshawb xyuas kev sib raug zoo nrog cov kev xaiv teb daim ntawv cog lus txheej txheej.

5. Txheej puas thiab kho tso tawm

Kev pheej hmoo tseem ceeb: cov teeb meem hauv cheeb tsam uas raug kho tab sis tsis tuaj yeem txheeb xyuas tau hauv kev tshuaj xyuas zaum kawg lossis ntawm qhov chaw.

Kev kho uas tsis muaj ntaub ntawv nyob qhov twg, txoj kev, los yog rov soj ntsuam yuav cuam tshuam cov txheej txheej traceability saw.

Cov chaw kuaj xyuas:

• pom zoo kho cov ntaub ntawv system;
• txhais qhov loj tshaj kho qhov loj;
• kho daim ntawv qhia chaw;
• thickness thiab discontinuity retesting;
• kho thiab rov tshuaj xyuas cov ntaub ntawv txuas nrog cov yeeb nkab tooj.

6. Pipeline thiab txheej batch traceability

Kev pheej hmoo tseem ceeb: Cov kav dej hauv paus, cov ntaub ntawv txheej, lossis cov txiaj ntsig kev tshuaj ntsuam yuav tsis sib xws hauv qhov kev tso tawm zaum kawg.

Cov yeeb nkab tus kheej tuaj yeem ploj thaum lub sij hawm blasting los yog txheej yog tias tsis muaj kev hloov pauv thiab batch tswj.

Cov chaw kuaj xyuas:

• kev soj ntsuam tas li ntawm cov yeeb nkab tooj;
• kev txheeb xyuas tus lej cam khwb cia thiab MTC;
• FBE, nplaum thiab PE batch cov ntaub ntawv;
• txheej thiab tshuaj xyuas ntau lawm hloov cov ntaub ntawv;
• qhov kawg cim txuas mus rau packing list piping map.

Lub txheej PE txheej tuaj yeem nyob tsis pom kev txawm tias qhov adhesion nyob rau hauv nws twb deteriorated. Vim li no, cov ntaub ntawv npaj saum npoo av, cov txheej txheem ntsuas kub, kuaj tev, thiab cov txiaj ntsig cathodic tso tawm muaj pov thawj muaj zog ntawm kev lees txais dua li txheej txheej ib leeg.

Download: 3LPE_Coating_Integrity_Risks_and_Control_Points_Balanced.pdf

Cov ntaub ntawv thiab traceability

Ib pob kev tso tawm tiav yuav tsum tuav cov kab lus hauv qab no:

Pipe marking â†' casting tooj â†' MTC ntawm lub hauv paus yeeb nkab â†' yeeb nkab tooj â†' batch ntawm txheej khoom â†' txheej ntau lawm hloov â†' txheej txheem kub cov ntaub ntawv â†' thickness thiab discontinuity qhia â†' kev puas tsuaj kuaj tau â†' kho thiab rov tshuaj xyuas cov ntaub ntawv â†' kawg tso npav â†' daim ntawv qhia kev ntim khoom

Cov ntaub ntawv pom zoo muaj xws li:

• EN 10204 3.1 cov ntaub ntawv pov thawj ntawm lub hauv paus yeeb nkab;
• lub hauv paus yeeb nkab seem thiab NDT cov ntaub ntawv;
• txheej cov ntaub ntawv pov thawj rau FBE, nplaum thiab PE;
• Pom zoo Daim Ntawv Thov txheej txheem Specification;
• Cov Txheej Txheem Kev Xeem Txuj Ci (PQT) daim ntawv qhia;
• Kev Tshawb Fawb thiab Kev Npaj Ua Haujlwm (ITP);
• ntsuas ntsuas calibration daim ntawv pov thawj;
• cov ntaub ntawv npaj nto;
• daim ntawv thov thiab extrusion kub cov ntaub ntawv;
• txheej txheej thickness;
• Daim ntawv qhia txog kev tsis sib haum xeeb;
• tev tawm cov ntaub ntawv tiv thaiv thiab kev sim ntau lawm;
• kho lub cav thiab daim ntawv qhia chaw;
• yeeb nkab kawg cutback qhia;
• Cov ntaub ntawv kuaj pom zaum kawg;
• packing daim ntawv txuas mus rau cov yeeb nkab tooj los yog txheej ntau ntau;
• tso tawm los ntawm tus neeg thib peb tshuaj xyuas qhov twg tau teev tseg.

Cov neeg ua haujlwm pej xeem cov lus qhia tshwj xeeb yuav tsum tau ntawv pov thawj ntau qib ntawm cov khoom siv txheej txheej, txheej txheej txheej txheej, PQT cov ntaub ntawv, cov ntaub ntawv ntsuas, cov ntaub ntawv tsim khoom, cov ntawv xeem, thiab cov txheej txheem ua ntej tso tawm ntau lawm.

Cov lus nug nquag nug (FAQ)

Dab tsi yuav tsum muaj 3LPE coated yeeb nkab RFQ suav nrog?

Qhia tus qauv, qib, PSL, OD, phab ntsa thickness, ntev thiab hom ntawm lub hauv paus yeeb nkab. Kuj tseem txhais cov txheej txheem txheej txheej, chav kawm kub, qhov tsawg kawg nkaus thickness ntawm ib txheej, tag nrho cov thickness, txiav rov qab, kev soj ntsuam xyuas, kho cov kev txwv thiab cov ntaub ntawv xav tau.

Dab tsi yog tus qauv siv rau 3LPE txheej?

Tus qauv tseem ceeb thoob ntiaj teb yog ISO 21809-1: 2018. Cov phiaj xwm kuj tseem tuaj yeem hais qhia DIN 30670-1: 2024 lossis CSA Z245.21: 22. Cov yeeb nkab steel nws tus kheej yuav tsum tau txiav txim cais rau API 5L, ISO 3183 lossis lwm yam kev pom zoo cov yeeb nkab qauv.

Puas API 5L npog 3LPE txheej?

No. API 5L npog cov yeeb nkab steel, tsis yog txheej txheej txheej txheej. Kev ua raws li 3LPE yuav tsum muaj daim ntawv pov thawj ntawm cov khoom siv txheej txheej, daim ntawv thov kev pom zoo, PQT, ITP thiab cov ntaub ntawv tshuaj xyuas txheej.

Lub thickness ntawm 3LPE txheej tau teev tseg li cas?

Thickness nyob ntawm cov yeeb nkab OD, txheej txheej, kev pabcuam kub, kev pheej hmoo cuam tshuam thiab qhov project specification. RFQ yuav tsum qhia qhov tsawg kawg nkaus thickness ntawm FBE, cov nplaum thiab tag nrho cov thickness ntawm txheej. Ib qho universal tuab yuav tsum tsis txhob siv rau txhua qhov haujlwm.

Qhov txawv ntawm 3LPE thiab FBE yog dab tsi?

FBE yog ib txheej ntawm epoxy txuas ncaj qha rau cov hlau npaj. 3LPE ntxiv cov nplaum copolymer thiab txheej txheej polyethylene, muab kev tiv thaiv ntau dua rau kev cuam tshuam, puas, indentation thiab tuav kev puas tsuaj.

Thov ib tsab ntawv tam sim no!